Audi A6 C6 2009 CAJ 3.0 TFSi V6 Engine Breaking For Spares

Hi Everyone

I have a low mileage A6 Avant 3.0T 2009 Le Mans that i bought with a seized engine with the intention of just replacing the engine with a good used one from the internet. I removed the seized lump and dismantled it to try and discover the cause of the seizure (and to also learn how it goes together) and found that it seemed to have been caused by overheating (leaking radiator & PCV valve) with 2 x middle piston big ends and the centre main bearing burned black.

After much deliberation on whether to rebuild or replace my seized engine i bought a used replacement engine from the internet and ended up buying a CWG engine with a misfire. Hoping (foolishly) that this was just an injector or coil pack issue & not realising the differencies in the engines i then found out that the rear plate is completely different between the CAJ & CWG engines. Upon changing the rear plates i then found there were metal particles in the sump and upon further investigation found that No6 cylinder had a big chunk missing off its lower flank with bits of piston ring floating in mid air.

I completely stripped the engine and removed the damaged piston & conrod and luckily it had only caused a slight nick in the cylinder wall and the crank was still moving freely.

I have managed to replace the damaged piston & conrod with a good one from my seized engine using the big end bearings from the new engine as these were identical in weight & size (checked with micrometer & scales) but obviously the piston rings are not bedded in to this block but the crank does now move freely.

All of the other parts of the engine seem identical (block, heads, cams, timing chains etc) and i have all of these parts dismantled and all seem in good condition.

I have since managed to source a third good complete engine for the car and I am now willing to sell off the previous 2 engines or any engine part separately or all good parts as a complete working engine in need of new gaskets, chains & seals etc. I have both CAJ & CWG backplates available which should make it compatible with many Audi's.

Please message me with any questions.